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8072061: Automatically determine optimal sizes for the CDS regions

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See new C++ class MetaspaceClosure.

Reviewed-by: coleenp, jiangli, mseledtsov
This commit is contained in:
Ioi Lam 2017-08-02 18:06:38 -07:00
parent 4b983a51fd
commit f7f193ae71
82 changed files with 2010 additions and 1622 deletions
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9
hotspot/src/share/vm/oops/annotations.hpp
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@ -43,6 +43,8 @@ typedef Array<u1> AnnotationArray;
// a type_annotation instance.
class Annotations: public MetaspaceObj {
// If you add a new field that points to any metaspace object, you
// must add this field to Annotations::metaspace_pointers_do().
// Annotations for this class, or null if none.
AnnotationArray* _class_annotations;
@ -63,6 +65,10 @@ class Annotations: public MetaspaceObj {
// Sizing (in words)
static int size() { return sizeof(Annotations) / wordSize; }
// Annotations should be stored in the read-only region of CDS archive.
static bool is_read_only_by_default() { return true; }
#if INCLUDE_SERVICES
void collect_statistics(KlassSizeStats *sz) const;
#endif
@ -87,6 +93,9 @@ class Annotations: public MetaspaceObj {
static typeArrayOop make_java_array(AnnotationArray* annotations, TRAPS);
bool is_klass() const { return false; }
void metaspace_pointers_do(MetaspaceClosure* it);
MetaspaceObj::Type type() const { return AnnotationsType; }
private:
static julong count_bytes(Array<AnnotationArray*>* p);
public: